Extends the OnTimer guard to skip session.poll() itself while modeApplyInProgress(), preventing an undo/redo or project-switch reload from replacing the view model under an in-flight applyMode.
Fixes D (handle lifetime), C (ASCII dashes), G (comment compression), I (shouldReport extracted + tested); CLAUDE.md route list corrected per A/B/H. E pushed back -- cross-module GUID plumbing is architectural, not a targeted fix.
Distinguish no-GUID-at-capture from identity-no-longer-live; rewrite the drop
message to state the real recovery step; mark FX-GUID stability [verify — DAW];
guard mismatched fx/fxOffline lengths; the report never force-opens now.
view_state v2 writes identities beside the v1 slot array, so a downgrade keeps
what it had. An FX gone at restore time is dropped and reported, never restored
onto whatever took its place.
Fixes a hidden-parent solo replay that could silence the mix. Also closes the N-mode segment silent no-op, amends the invariant comment, trims view.cpp under 600 lines, hedges two SDK inferences, drops a dead null-check.
Solo is cached, cleared and replayed per mode on a real switch only; the switch is refused visibly while the transport runs. The footer segment now routes through the activate actions, so a panel switch finally persists.
daniel